CN211468120U - Heat pump vehicle air conditioner with battery thermal management function - Google Patents

Heat pump vehicle air conditioner with battery thermal management function Download PDF

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Publication number
CN211468120U
CN211468120U CN202020015051.2U CN202020015051U CN211468120U CN 211468120 U CN211468120 U CN 211468120U CN 202020015051 U CN202020015051 U CN 202020015051U CN 211468120 U CN211468120 U CN 211468120U
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China
Prior art keywords
electromagnetic valve
battery
heat exchanger
condenser
air
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CN202020015051.2U
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Chinese (zh)
Inventor
郑志华
金星洙
郑伟
刘石兵
彭业勋
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Anhui Jianghuai Songz Air Conditioner Co Ltd
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Anhui Jianghuai Songz Air Conditioner Co Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/70Energy storage systems for electromobility, e.g. batteries

Abstract

The utility model relates to a heat pump vehicle air conditioner with battery heat management function, including air-conditioning box, outer heat exchanger, vapour and liquid separator, compressor, be equipped with condenser, evaporimeter, air-blower, first high-pressure PTC in the air-conditioning box, be equipped with the heating throttle nozzle stub between outer heat exchanger and the condenser, be equipped with the second solenoid valve on the heating throttle nozzle stub in parallel, be equipped with first solenoid valve and refrigeration throttle nozzle stub between outer heat exchanger and the evaporimeter in proper order; the evaporator is communicated with the condenser through a gas-liquid separator and a compressor in sequence; a third electromagnetic valve is arranged between the gas-liquid separator and the outer heat exchanger; the battery thermal management system comprises a battery cooler, and the battery cooler is connected with the third electromagnetic valve in parallel; a fourth electromagnetic valve is arranged between the heating throttling short pipe and the outer heat exchanger in parallel; the utility model discloses solve the exhaust temperature of compressor when heat pump type electric automobile air conditioner low temperature operating mode better too high, the heating capacity is obviously not enough, difficult problems such as outer low temperature heat source heat exchanger surface defrosting difficulty.

Description

Heat pump vehicle air conditioner with battery thermal management function
Technical Field
The utility model belongs to the electric automobile field especially relates to heat pump vehicle air conditioner field with battery heat management function.
Background
The electric automobile industry develops rapidly, but due to the characteristics of batteries and the diversity of the application environment of the electric automobiles, the electric automobiles are difficult to be widely used in severe cold areas and hot areas or to be operated in a long distance at present; if the humidity of the external environment is high, the external heat exchanger can be frosted or even frozen, so that the heat exchange of the external heat exchanger is seriously hindered, the heating performance of the heat pump type air conditioner is rapidly and greatly attenuated, the heating effect is obviously influenced, and even the air conditioner compressor fails; therefore, the external heat exchanger needs to be defrosted in time; the traditional defrosting mode in the prior art is as follows: in order to defrost the heat exchanger outside the vehicle, the four-way reversing valve is switched to a refrigeration cycle flow, and high-temperature and high-pressure refrigerant discharged by the compressor is discharged into the heat exchanger outside the vehicle through the four-way reversing valve so as to melt a frost layer or an ice layer on the heat exchanger outside the vehicle; the traditional defrosting mode has more drawbacks: during defrosting, the evaporator in the automobile absorbs heat in the automobile, so that the comfort in the automobile is influenced; when the traditional defrosting mode is adopted for defrosting, the four-way reversing valve is used for reversing, the temperature of the heat exchanger on the inner side of the vehicle is quickly reduced to be lower than minus 20 ℃, and a large amount of low-temperature liquid refrigerant is accumulated in the heat exchanger on the inner side of the vehicle, so that the temperature in the vehicle is reduced; particularly in cold winter, the defrosting time of the external machine is longer, the heat dissipation in the vehicle through the vehicle body is more severe, and the temperature fluctuation in the vehicle is larger; according to the comfort simulation experiment, the temperature in the automobile can be reduced by more than 10 ℃ to the maximum extent, the comfort in the automobile is seriously influenced, longer time is needed for obtaining hot air again, and the comfort in the automobile is extremely unfavorable; the traditional defrosting mode is not beneficial to the reliable operation of the compressor, and the traditional defrosting mode is adopted, and the work of the compressor on the refrigerant is mainly utilized for defrosting; when the defrosting is carried out, the suction temperature of the compressor is maintained below-25 ℃ or even lower, the suction pressure is very low, liquid impact is easily caused, the reliable operation of the compressor is not favorable, and the actual service life of the compressor is influenced.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to a heat management system for heat pipe management of air-mix battery of heat pump.
The utility model discloses a following technical scheme realizes above-mentioned purpose:
a heat pump automobile air conditioner with a battery heat management function comprises an air conditioning system and a battery heat management system, wherein the air conditioning system comprises an air conditioning box, an outer heat exchanger, a gas-liquid separator and a compressor, the outer heat exchanger, the gas-liquid separator and the compressor are arranged outside the air conditioning box, a condenser, an evaporator, an air blower and a first high-pressure Positive Temperature Coefficient (PTC) are arranged in the air conditioning box, a heating throttling short pipe is arranged between the outer heat exchanger and the condenser, a second electromagnetic valve is arranged on the heating throttling short pipe in parallel, and a first electromagnetic valve and a refrigerating throttling short pipe are sequentially arranged between the outer heat exchanger and; the evaporator is communicated with the condenser through a gas-liquid separator and a compressor in sequence; a third electromagnetic valve is arranged between the gas-liquid separator and the outer heat exchanger; the battery thermal management system sequentially comprises a battery cooler, a second high-voltage PTC, a battery pack and a water pump, wherein the battery cooler is connected with a third electromagnetic valve in parallel; and a fourth electromagnetic valve is arranged between the heating throttling short pipe and the outer heat exchanger in parallel.
As a further optimization scheme of the utility model, the shell of the air conditioning box is also provided with an air inlet and an air outlet, the blower is fixedly arranged at one side close to the air inlet, the condenser is arranged at one side of the air outlet, and the evaporator is arranged between the blower and the condenser; the first high-pressure PTC is arranged on one side, close to the air outlet, of the condenser.
As the utility model discloses a further optimization scheme, be equipped with the surge tank between water pump and the battery package.
As a further optimization scheme of the utility model, first solenoid valve and second solenoid valve are normal open type solenoid valve, the third solenoid valve is normal close type solenoid valve.
As a further optimization scheme of the utility model, the inner capillary of the heating throttling short pipe is 0.8-1.0 mm in inner diameter and 30-40 mm in length; the inner capillary of the refrigeration throttling short pipe is 1.2-1.7 mm in inner diameter and 30-40 mm in length.
The beneficial effects of the utility model reside in that:
1) the heat pump type automobile air conditioner with the battery heat management function has good defrosting effect, small temperature fluctuation in the automobile and good comfort, and can better solve the problems of overhigh exhaust temperature of the compressor, obvious insufficient heating capacity, difficult surface defrosting of the low-temperature heat source heat exchanger outside the automobile and the like when the heat pump type electric automobile air conditioner operates under the low-temperature working condition;
2) the heat pump air conditioning system and the battery heat management system of the utility model share one set of condenser and evaporator, thus simplifying the components of the vehicle heat management system and reducing the production cost;
3) the heat pump air conditioning system and the battery heat management system are independent from each other, and can be used for independently performing heat management on the battery, the motor and the passenger compartment, so that loops are not influenced mutually when multiple heat management is performed, and the heat management efficiency is high; the heat pump air conditioning system and the battery heat management loop establish a heat exchange relationship only through the battery cooler, and the structure is simple.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic diagram of the cooling mode of the present invention;
FIG. 3 is a schematic view of a heating mode of the present invention;
fig. 4 is a schematic diagram of the heating + battery cooling mode of the present invention;
FIG. 5 is a schematic view of the cooling and dehumidifying mode of the present invention;
FIG. 6 is a schematic view of a heating and dehumidifying mode of the present invention;
FIG. 7 is a schematic diagram of a defogging mode of the present invention;
in the figure: 1. an air conditioning cabinet; 11. a condenser; 12. an evaporator; 13. a blower; 14. a first high-voltage PTC; 15. an air inlet; 16. an air outlet; 2. an external heat exchanger; 3. a gas-liquid separator; 4. a compressor; 51. a heating throttling short pipe; 52. a short refrigeration throttling pipe; 61. a first solenoid valve; 62. a second solenoid valve; 63. a third electromagnetic valve; 64. a fourth solenoid valve; 71. a battery cooler; 72. a second high-voltage PTC; 73. a battery pack; 74. a water pump; 75. and (4) balancing tanks.
Detailed Description
The present application will now be described in further detail with reference to the drawings, it should be noted that the following detailed description is given for illustrative purposes only and is not to be construed as limiting the scope of the present application, as those skilled in the art will be able to make numerous insubstantial modifications and adaptations to the present application based on the above disclosure.
As shown in fig. 1 to 7, the heat pump automobile air conditioner with the battery heat management function comprises an air conditioning system and a battery heat management system, wherein the air conditioning system comprises an air conditioning box 1, an outer heat exchanger 2 arranged outside the air conditioning box 1, a gas-liquid separator 3 and a compressor 4, and a condenser 11, an evaporator 12, a blower 13 and a first high-pressure PTC14 are arranged in the air conditioning box 1;
a heating throttling short pipe 51 is arranged between the outer heat exchanger 2 and the condenser 11, and an inner capillary of the heating throttling short pipe 51 is 0.8-1.0 mm in inner diameter and 30-40 mm in length; the basic principle of the throttling short pipe is that high-pressure liquid refrigerant is forced to flow through a small overflowing cross section to generate proper local resistance loss or on-way loss, so that the pressure of the refrigerant is suddenly reduced, and meanwhile, a part of liquid refrigerant is vaporized to absorb latent heat, so that the throttled refrigerant becomes a low-pressure and low-temperature state;
a second electromagnetic valve 62 is arranged on the heating throttling short pipe 51 in parallel, and the second electromagnetic valve 62 is a normally open electromagnetic valve;
a first electromagnetic valve 61 and a refrigeration throttling short pipe 52 are sequentially arranged between the outer heat exchanger 2 and the evaporator 12, an inner capillary of the refrigeration throttling short pipe 52 is 1.2-1.7 mm in inner diameter and 30-40 mm in length, and the first electromagnetic valve 61 is a normally open electromagnetic valve;
the evaporator 12 is communicated with the condenser 11 through the gas-liquid separator 3 and the compressor 4 in sequence; a third electromagnetic valve 63 is arranged between the gas-liquid separator 3 and the outer heat exchanger 2, wherein the third electromagnetic valve 63 is a normally closed electromagnetic valve;
the shell of the air-conditioning box 1 is also provided with an air inlet 15 and an air outlet 16, the air blower 13 is fixedly arranged at one side close to the air inlet 15, the condenser 11 is arranged at one side of the air outlet 16, and the evaporator 12 is arranged between the air blower 13 and the condenser 11; the first high-pressure PTC14 is arranged on one side of the condenser 11 close to the air outlet 16;
the battery thermal management system sequentially comprises a battery cooler 71, a second high-voltage PTC72, a battery pack 73 and a water pump 74, wherein the battery cooler 71 is connected with the third electromagnetic valve 63 in parallel;
a fourth electromagnetic valve 64 is arranged between the heating throttling short pipe 51 and the outer heat exchanger 2 in parallel;
in order to prevent the loss of the cooling liquid caused by volatilization and the like in the recycling process of the engine cooling liquid, a balance tank 75 is arranged between the water pump 74 and the battery pack 73; the balancing tank 75 plays a role in regulating the system, and when the temperature rises, part of the cooling liquid steam enters the balancing tank to be stored along with the increase of the volume of the cooling liquid; when the temperature is reduced and the volume of the cooling liquid is reduced, the cooling liquid in the balance tank can be replenished into the cooling system, so that the cooling liquid can better play the role;
the heat pump air conditioner and battery heat management device can realize modes of refrigeration, heating, dehumidification, demisting and the like;
firstly, in a refrigeration mode, as shown in fig. 2, a compressor is started to compress a refrigerant into high-temperature and high-pressure gas, the high-temperature and high-pressure gas enters a condenser and the condenser to be cooled into high-temperature and high-pressure liquid, then the liquid flows through a normally-open second electromagnetic valve and an external heat exchanger and is divided into two branches, the first branch passes through a normally-open first electromagnetic valve and enters an evaporator through throttling of a refrigeration throttling short pipe, the evaporator absorbs heat to cool air, a blower blows cold air into a passenger cabin, the refrigerant evaporates at the same time, the refrigerant after heat absorption and evaporation enters a gas-liquid separator, the refrigerant after gas-liquid separation is carried out through the gas-liquid separator, and finally returns to the compressor, so that a refrigeration cycle is formed, and the effect of blowing cold air to the;
the second branch flows through the battery cooler after flowing through the external heat exchanger and then is communicated with the gas-liquid separator; the battery cooler is also provided with an electronic expansion valve, when the refrigerant passes through the battery cooler, the battery cooler can introduce the refrigerant in the air-conditioning system, the refrigerant is evaporated after the expansion valve is throttled, and the heat of the cooling liquid in the battery cooling loop is absorbed, and the refrigerant takes away the heat of the cooling liquid in the battery thermal management system through heat exchange in the process, so that the effect of cooling the battery is achieved;
in the heating mode, as shown in fig. 3, the second electromagnetic valve, the first electromagnetic valve and the fourth electromagnetic valve are closed, the third electromagnetic valve is opened, and the high-pressure PTC is opened, at the same time, the refrigerant passes through the condenser, the heating short throttling pipe, the external heat exchanger, the third electromagnetic valve and the gas-liquid separator in sequence by the compressor, and finally returns to the compressor to form a heating cycle, so that heating of the passenger compartment can be realized;
in the heating and battery cooling mode, as shown in fig. 4, the second electromagnetic valve, the first electromagnetic valve, the fourth electromagnetic valve and the third electromagnetic valve are all closed, and the high-pressure PTC is opened, at the same time, the refrigerant is sequentially passed through the condenser, the heating throttling short pipe, the external heat exchanger, the battery cooler and the gas-liquid separator by the compressor, and finally returns to the compressor to form a heating cycle, so that the effects of heating the passenger compartment and cooling the battery can be simultaneously realized;
in the dehumidification mode, refrigeration and dehumidification are performed, as shown in fig. 5, the second electromagnetic valve and the first electromagnetic valve are kept in an open state, the third electromagnetic valve and the fourth electromagnetic valve are closed, the high-pressure PTC is opened at the same time, and a refrigerant passes through the condenser, the second electromagnetic valve, the outer heat exchanger, the first electromagnetic valve, the evaporator and the gas-liquid separator in sequence by the compressor and finally returns to the compressor; this results in dehumidification in a cooling mode;
heating and dehumidifying, as shown in fig. 6, the second electromagnetic valve and the fourth electromagnetic valve are closed, so that the refrigerant flows out of the condenser, passes through the heating throttling short pipe, and then enters the outer heat exchanger, other circuits are consistent with the above, and the cycle realizes the dehumidifying in the heating mode;
a demisting mode, as shown in fig. 7, keeping the first electromagnetic valve and the fourth electromagnetic valve in an open state, keeping the third electromagnetic valve in a closed state, and simultaneously opening the first high-pressure PTC; the refrigerant compressed by the compressor enters the condenser, when frosting occurs, the air is heated through the first high-pressure PTC, and the refrigerant directly enters the gas-liquid separator through the fourth electromagnetic valve and then enters the compressor, so that demisting circulation is realized.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.

Claims (5)

1. The utility model provides a heat pump vehicle air conditioner with battery thermal management function, includes air conditioning system and battery thermal management system, air conditioning system includes air conditioning cabinet (1), locates outer heat exchanger (2), vapour and liquid separator (3), compressor (4) outside air conditioning cabinet (1), be equipped with condenser (11), evaporimeter (12), air-blower (13), first high pressure PTC (14) in air conditioning cabinet (1), its characterized in that: a heating throttling short pipe (51) is arranged between the outer heat exchanger (2) and the condenser (11), a second electromagnetic valve (62) is arranged on the heating throttling short pipe (51) in parallel, and a first electromagnetic valve (61) and a refrigerating throttling short pipe (52) are sequentially arranged between the outer heat exchanger (2) and the evaporator (12); the evaporator (12) is communicated with the condenser (11) through a gas-liquid separator (3) and a compressor (4) in sequence; a third electromagnetic valve (63) is arranged between the gas-liquid separator (3) and the outer heat exchanger (2); the battery thermal management system sequentially comprises a battery cooler (71), a second high-voltage PTC (72), a battery pack (73) and a water pump (74), wherein the battery cooler (71) is connected with a third electromagnetic valve (63) in parallel; a fourth electromagnetic valve (64) is arranged between the heating throttling short pipe (51) and the outer heat exchanger (2) in parallel.
2. The heat pump automobile air conditioner with the battery heat management function as claimed in claim 1, wherein: an air inlet (15) and an air outlet (16) are further formed in the shell of the air conditioning box (1), the air blower (13) is fixedly arranged on one side close to the air inlet (15), the condenser (11) is arranged on one side of the air outlet (16), and the evaporator (12) is arranged between the air blower (13) and the condenser (11); the first high-pressure PTC (14) is arranged on one side, close to the air outlet (16), of the condenser (11).
3. The heat pump automobile air conditioner with the battery heat management function as claimed in claim 1, wherein: and a balance tank (75) is arranged between the water pump (74) and the battery pack (73).
4. The heat pump automobile air conditioner with the battery heat management function as claimed in claim 1, wherein: the first electromagnetic valve (61) and the second electromagnetic valve (62) are both normally open type electromagnetic valves, and the third electromagnetic valve (63) is a normally closed type electromagnetic valve.
5. The heat pump automobile air conditioner with the battery heat management function as claimed in claim 1, wherein: the inner capillary of the heating throttling short pipe (51) is 0.8-1.0 mm in inner diameter and 30-40 mm in length; the inner capillary of the refrigeration throttling short pipe (52) is 1.2-1.7 mm in inner diameter and 30-40 mm in length.
CN202020015051.2U 2020-01-06 2020-01-06 Heat pump vehicle air conditioner with battery thermal management function Active CN211468120U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202020015051.2U CN211468120U (en) 2020-01-06 2020-01-06 Heat pump vehicle air conditioner with battery thermal management function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202020015051.2U CN211468120U (en) 2020-01-06 2020-01-06 Heat pump vehicle air conditioner with battery thermal management function

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113203125A (en) * 2021-06-04 2021-08-03 安徽江淮松芝空调有限公司 Mould removing system and method for vehicle air conditioner evaporator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113203125A (en) * 2021-06-04 2021-08-03 安徽江淮松芝空调有限公司 Mould removing system and method for vehicle air conditioner evaporator
CN113203125B (en) * 2021-06-04 2022-06-03 安徽江淮松芝空调有限公司 Mould removing system and method for vehicle air conditioner evaporator

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